 Explanation / Important formulas:

• In a simple series, the difference between two consecutive numbers is constant
• Example: 27, 24, 21, 18, __
• [Rule: There is a difference of (-3) between each item. The missing number in this case is 15]
• Example: 3, 4, 6, 9, 13, 18, __
• [Rule: Add 1 to the difference between two adjacent items. After the first number add 1, after the second number add 2…etc In this case the missing number is 24]
• Check whether adjacent numbers in the series change based on a logical pattern
• Example: 2, 4, 12, 48, __
• [Rule : Multiply the first number by 2, the second number by 3 and so on The missing number is 240]
• See if you can find a rule that involves using two or more basic arithmetic functions (+, -, ÷, x). In the below series, the functions alternate in an orderly fashion
• Example: 5, 7, 14, 16, 32, 34, __
• [Rule: Add 2, multiply by 2 , add 2, multiply by 2 etc. the missing item is 68]
• There can also be series, they difference themselves create a series:
• Example : +2, /3, x4, -5
• [Rule: The number advance by intervals of 1 and the arithmetic function change in an ordinary sequence here the next Arithmetic function will be 9(3+6=9)]

In a more complex series the differences between numbers may be dynamic rather than fixed, but there still is a clear logical rule.

Instructions to take Aptitude Test

• Click on start to start taking the test.
• Click on the option (A, B, C or D) to figure out the right answer.
• You can answer multiple times till you get the right answer.
• Once you get the right answer, explanations (if any) for the same will be showcased down.
• On click of list, you get to see total no of questions, no of questions you answered and no of questions pending to answer.
• On click of question number you will go to that particular question.
• On click of END your test will end.
• On click of ‘Get Results’ you will get to see correct answer for each questions.